Key parameters at a glance

A radius of 3.31 Earth radii
A mass of 11.00 Earth masses
Surface gravity around 1.00 g
An orbital period of 10.135 days
Semi-major axis 0.0525 AU
Equilibrium temperature 474 K (201 °C)
Distance from Earth 586.60 light-years
Earth Similarity Index 0.465
Travel time at Voyager 1 speed 10,344,772 years
Almost certainly tidally locked to its host star given the close orbit

K2-95 b Planet Profile

Physical Specs

Radius

3.31 R⊕

Radius (Jupiter)

0.295 R♃

Mass

11.00 M⊕

Mass (Jupiter)

0.035 M♃

Density

1.67 g/cm³

Surface Gravity

1.00 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.465

HZ Position Unknown

Controversial No

Discovery

Year 2016

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#272of 1978

top 13.7%

This planet

3.31R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

DMPP-1 c 3.31 R⊕ Kepler-606 b 3.31 R⊕ Kepler-207 d 3.31 R⊕

Metric	Earth	K2-95 b	Jupiter
Radius (R⊕)	1.00	3.31	11.21
Mass (M⊕)	1.00	11.00	317.83
Density (g/cm³)	5.51	1.67	1.33
Surface Gravity (g)	1.00	1.00	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 195193025

Gaia DR2

Gaia DR2 659744295638254336

Gaia DR3

Gaia DR3 659744295638254336

System

K2-95

Percentile among Sub-Neptune cohort

Radius 3.310 R⊕ · percentile 86 / cohort 1978

Mass 11.000 M⊕ · percentile 80 / cohort 1978

Orbital period 10.13 d · percentile 35 / cohort 1946

Distance 179.85 pc · percentile 28 / cohort 1975

ESI 0.465 · percentile 65 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

10.135 days

Semi-major axis

0.0525 AU

Eccentricity

0.160

Inclination

90.00 °

Year Length

A year here lasts approximately 10.13 Earth days (2.8% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0525 AU.

Transit Fingerprint

Depth

0.528 %

Duration

2.856 h

Impact parameter b

0.460

Rp / R★

0.075600

Transit midpoint (BJD)

2,457,140.7422

Photometric dip

Transit produces a flux drop of 5,276 ppm lasting ≈ 2.86 h.

Extended Orbital Architecture

Planet / star radius ratio

0.075600

Semi-major axis / stellar radius

28.280

Impact parameter (b)

0.460

RV semi-amplitude (K)

6.800 m/s

Transit mid-time (BJD)

2,457,140.7422

Long. of periastron (ω)

-2.00°

Angular separation (arcsec)

0.29200

Eq. Temperature

474K

(201 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.465

0 = alien, 1 = Earth-identical

Insufficient insolation data — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Obermeier et al. 2016

Instrument

Kepler CCD Array

Publication

2016-12

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at K2 (12 shown).

K2-72 d · Rocky Terrestrial K2-72 b · Rocky Terrestrial K2-91 b · Rocky Terrestrial K2-72 c · Rocky Terrestrial K2-102 b · Super-Earth K2-90 c · Super-Earth K2-72 e · Super-Earth K2-83 b · Rocky Terrestrial K2-88 b · Rocky Terrestrial K2-80 c · Super-Earth K2-83 c · Super-Earth K2-65 b · Super-Earth

Host System: K2-95

Spectral Class

M-type red dwarf

Effective Temperature

3,566 K — cooler than the Sun (5,778 K)

Estimated Age

0.79 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.400 R☉

Stellar Mass

0.410 M☉

Metallicity [Fe/H]

0.10

Extended Stellar Properties

Surface gravity (log g)

4.850 dex

Stellar density

8.055 g/cm³

Systemic radial velocity

35.85 km/s

Rotational v·sin i

2.60 km/s

Rotation period

23.90 days

Metallicity ratio

[Fe/H]

Distance

179.85 parsec

Light-years 586.60 ly

V-band magnitude

17.24 mag

Voyager-speed travel 10,344,772 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

5.535 mas

Total Proper Motion

37.852 mas/yr

PM Right Ascension

-35.77 mas/yr

PM Declination

-12.39 mas/yr

Galactic Cartesian (pc)

x = -0.600 · y = 0.731 · z = 0.325

Equatorial (J2000)

RA 129.36257° · Dec 18.97662°

Galactic ℓ, b

206.394° · 31.591°

Ecliptic λ, β

126.850° · 0.431°

HTM-20 index

233118165